Rock processing plant

Abstract

The invention relates to a rock processing plant ( 10 ) having a machine frame ( 13 ), which supports a screening unit ( 20 ), wherein the screening unit ( 20 ) has at least two screen decks ( 21, 22 ), which are arranged offset from each other in the vertical direction (H) of the rock processing plant ( 10 ), wherein the screen decks ( 21, 22 ) each have a discharge area (A 1, A 2 ), wherein a transport device ( 15 ) is connected to the screening unit ( 22 ) in the conveying direction, wherein the transport device ( 15 ) has a feed area ( 15.1 ) and a discharge area ( 15.2 ), wherein a transport means, in particular an endless circulating conveyor belt ( 15.3 ), extends in a transport direction (D) at least partially between the feed area ( 15.1 ) and the discharge area ( 15.2 ), wherein the transport device ( 15 ) is attached to the machine frame ( 13 ) by means of a mechanical actuator ( 31 ), wherein the mechanical actuator ( 31 ) can be used to move the feed area ( 15.1 ) of the transport device ( 15 ) between two control positions, in which the feed area ( 15.1 ) is optionally assigned to one of the discharge areas (A 1, A 2 ) of the two screen decks ( 21, 22 ) or both discharge areas (A 1, A 2 ), and wherein the mechanical actuator ( 31 ) can be used to move the feed area ( 15.1 ) of the transport device ( 15 ) between the two control positions in the vertical direction and in the transport direction (D) of the transport device ( 15 ). Such a rock processing plant has a simple and space-saving design, which permits a conversion to the different operating positions with little effort.

The invention claimed is: 
     
       1. A rock processing plant, comprising:
 a machine frame; 
 a screening unit supported on the machine frame, the screening unit including at least first and second screen decks offset from each other in a vertical direction, the first and second screen decks having first and second screen deck discharge areas, respectively; 
 a transport device including an endless circulating transport conveyor belt extending in a transport direction at least partially between a transport conveyor belt feed area and a transport conveyor belt discharge area; and 
 a mechanical actuator connected between the machine frame and the transport device, the mechanical actuator being configured to move the transport conveyor belt feed area of the transport device between a first control position wherein only the first screen deck discharge area coincides with the transport conveyor belt feed area, and a second control position wherein both of the first and second screen deck discharge areas coincide with the transport conveyor belt feed area, wherein the mechanical actuator is configured to move the transport conveyor belt feed area between the first and second control positions in both the vertical direction and the transport direction; 
 wherein in the first control position the transport device is attached to the machine frame by a first swivel bearing configured such that the transport device can be swiveled about a first swivel axis to change an inclination of the transport device; and 
 wherein in the second control position the transport device is attached to the machine frame by a second swivel bearing configured such that the transport device can be swiveled about a second swivel axis to change the inclination of the transport device. 
 
     
     
       2. The rock processing plant of  claim 1 , wherein:
 in each of the first and second control positions the inclination of the transport device can be adjusted in an angular range between about 0° and at least about 35°. 
 
     
     
       3. The rock processing plant of  claim 1 , wherein:
 the mechanical actuator is configured to effect both the change in inclination of the transport device and the movement of the transport device between the first and second control positions. 
 
     
     
       4. A rock processing plant, comprising:
 a machine frame; 
 a screening unit supported on the machine frame, the screening unit including at least first and second screen decks offset from each other in a vertical direction, the first and second screen decks having first and second screen deck discharge areas, respectively; 
 a transport device including an endless circulating transport conveyor belt extending in a transport direction at least partially between a transport conveyor belt feed area and a transport conveyor belt discharge area; 
 a mechanical actuator connected between the machine frame and the transport device, the mechanical actuator being configured to move the transport conveyor belt feed area of the transport device between a first control position wherein only the first screen deck discharge area coincides with the transport conveyor belt feed area, and a second control position wherein both of the first and second screen deck discharge areas coincide with the transport conveyor belt feed area, wherein the mechanical actuator is configured to move the transport conveyor belt feed area between the first and second control positions in both the vertical direction and the transport direction; and 
 a locking device including a first support part connected to the machine frame and a second support part connected to the transport device, the first and second support parts being adjustable in position relative to each other, and the first and second support parts being lockable relative to each other using a form-fit element in a plurality of locking positions corresponding to different inclinations of the transport device. 
 
     
     
       5. The rock processing plant of  claim 4 , wherein:
 the mechanical actuator is coupled to the first and second support parts such that the first and second support parts are moved relative to each other when the mechanical actuator moves. 
 
     
     
       6. The rock processing plant of  claim 4 , wherein:
 the mechanical actuator or the first support part is configured to rest on a further support part of the machine frame or of the transport device in a form-fitting manner in either of at least two mounting positions spaced apart in the vertical direction. 
 
     
     
       7. The rock processing plant of  claim 6 , wherein:
 the further support part includes a guide; and 
 the mechanical actuator or the first support part includes a guide piece received in the guide to at least partially guide movement of the mechanical actuator or the first support part between the two mounting positions. 
 
     
     
       8. A rock processing plant, comprising:
 a machine frame; 
 a screening unit supported on the machine frame, the screening unit including at least first and second screen decks offset from each other in a vertical direction, the first and second screen decks having first and second screen deck discharge areas, respectively; 
 a transport device including an endless circulating transport conveyor belt extending in a transport direction at least partially between a transport conveyor belt feed area and a transport conveyor belt discharge area; 
 a mechanical actuator connected between the machine frame and the transport device, the mechanical actuator being configured to move the transport conveyor belt feed area of the transport device between a first control position wherein only the first screen deck discharge area coincides with the transport conveyor belt feed area, and a second control position wherein both of the first and second screen deck discharge areas coincide with the transport conveyor belt feed area, wherein the mechanical actuator is configured to move the transport conveyor belt feed area between the first and second control positions in both the vertical direction and the transport direction; and 
 a swivel mechanism connecting the transport device to the machine frame, the swivel mechanism being configured to guide the transport conveyor belt feed area between the first and second control positions. 
 
     
     
       9. The rock processing plant of  claim 8 , wherein:
 the swivel mechanism includes a holder and a swingarm, the holder and the swingarm each being coupled directly or indirectly to the machine frame by one joint and to the transport device by a further joint to form a four-bar linkage system. 
 
     
     
       10. The rock processing plant of  claim 9 , further comprising:
 a holding element arranged on the transport device or on the machine frame; 
 wherein the holder of the swivel mechanism includes a catch element; and 
 wherein in one position of the transport device the catch element is not in engagement with the holding element and in another position of the transport device the catch element is in engagement with the holding element. 
 
     
     
       11. The rock processing plant of  claim 10 , wherein:
 in the first control position the transport device is attached to the machine frame by a first swivel bearing configured such that the transport device can be swiveled about a first swivel axis to change an inclination of the transport device; and 
 in the second control position the transport device is attached to the machine frame by a second swivel bearing configured such that the transport device can be swiveled about a second swivel axis to change an inclination of the transport device, the second swivel bearing being formed by the holding element and catch element. 
 
     
     
       12. The rock processing plant of  claim 11 , wherein:
 in the second control position the transport device is configured to be swiveled relative to the swingarm about an articulation axis defined by an articulation link, and the swingarm includes a positioning guide, the articulation link being movable within the positioning guide transverse to the axis of articulation.